# Electrician's Helper

> Electrical code lookup and installation calculation tool for electricians. (iPhone/iPad app by Sam Virgillo.)

- Source: https://appshunter.io/ios/app/electricians-helper/id339910500 (this page in markdown: same URL + `.md`)
- Developer: [Sam Virgillo](https://appshunter.io/developer/324560825)
- Category: Productivity, Business
- Price: $12.99
- Rating: 4.40/5 from 13 App Store ratings · 46 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 29 MB
- Languages: American English, French (France), Latin American Spanish
- Released: 2009-11-25
- Data updated: 2026-09-02
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/electricians-helper/id339910500/reviews.md

## What is Electrician's Helper?

Electrician’s Helper will take the hassle out of looking up electrical codes and doing complex calculations for installations.

With Electrician’s Helper you can...

●   Calculate voltage, current and power in 3 phase delta and wye circuits.

●   Find the ampacity of a conductor as per the NEC and CEC tables.

●   Calculate the voltage drop in a line based on length, size, current and temperature.

●   Find the total box fill by entering the size and number of conductors, straps and clamps.

●   Find the maximum number of conductors allowed in a particular size raceway based on NEC and CEC rules.

●   Determine what size raceway is needed for a bundle of conductors.

●   Find the maximum bend radius of a conduit.

●   Find the maximum capacitor kvar for a motor and the current reduction obtained.

●   Find the motor current, heater current, breaker required, wire size, starter and conduit size for a particular 3 phase motor.

●   Find the full load current of an induction, squirrel cage, and synchronous motor.

●   Find the locked rotor current of a single or 3 phase motor.

●   Estimate the Maximum Pull Tension.
 
●   Calculate voltage, current and kVA of single and three phase transformers.
    
●   Do basic ohm’s law calculations.

●   Find decimal equivalents of fractions.

●   Convert temperature scales.

●   Look up connector configurations.

●   Look up NEC tables 315.60(C)(1-20)

Tested with iOS 16.6 thru iOS 26.3

Please note that this is a calculator for codes used in the NEC and CEC.  It is not a replacement for the code books.

## Key features

- 3 phase delta and wye circuit calculations
- Conductor ampacity lookup (NEC/CEC)
- Voltage drop calculation
- Box fill calculation
- Raceway fill and sizing
- Motor calculations
- Transformer calculations

## Recent user reviews (10 of 46)

All indexed reviews: https://appshunter.io/ios/app/electricians-helper/id339910500/reviews.md

### 1/5 — Want refund

*2023-09-12, version 2.2.3*

It advertises being a conduit fill calculator for CEC but the wire types don’t match with types in the code making this useless for conduit fill as far as I can tell..

### 4/5 — Electricians Helper

*2020-04-17, version 2.0.5*

Voltage drop calculator crash’s when selecting number of phases

### 3/5 — Conduit calculator not working!

*2020-01-23*

I love this app but recent changes/upgrades has left my what conduit size calculator not working. Please help, it’s the most used tool I have in the app!!

### 5/5 — Electrician

*2018-08-29*

I have this app it’s totally helpful, I use it all the time.

### 2/5 — App issue

*2018-06-05, version 1.9.2*

This app is great but have issue on how many wires can we fill in the conduit. It crashes everytime I press continue after selecting the conduit. It would be appreciate if this issue can be fixed.

### 5/5 — Great App

*2015-09-26, version 1.8.0*

Great app worth the $$

### 4/5 — Take it easy

*2015-09-24*

This is a great app. Unfortunately it doesn't get along with iOS 9 yet but everyone should take it easy with the bad reviews. According to his website an updated is done and awaiting Apple to approve. A little patience my friends.

### 1/5 — Need to update app to iOS 9

*2015-09-23, version 1.7.2*

Please update this app to work with iOS9! We paid for this app - make it work!!

### 1/5 — OS9

*2015-09-20*

App does not work with new operating system upgrade. Locks or freezes screen. Have deleted and reloaded several times to no avail.

### 1/5 — Doesn't work

*2015-09-19, version 1.7.2*

App will not open! Please fix, doesn't work with iOS 9/on iphone6

## Frequently asked questions about Electrician's Helper

### What does Electrician's Helper do?

Electrician's Helper is a mobile application designed to simplify electrical work by providing quick access to electrical codes and performing complex calculations for installations. It assists electricians with tasks such as finding conductor ampacity, calculating voltage drop, determining box fill, and sizing raceways.

### What are the key features of this app?

Key features include calculations for 3 phase delta and wye circuits, conductor ampacity lookup based on NEC and CEC tables, voltage drop calculation, box fill determination, raceway sizing, and various motor and transformer calculations. It also offers basic Ohm's law calculations and decimal equivalents.

### Is this app free to use?

Based on the provided information, this application is a paid app. It does not have in-app purchases or advertisements, indicating a one-time purchase model for full access to its features.

### What electrical codes does this app reference?

The app specifically references codes used in the National Electrical Code (NEC) and the Canadian Electrical Code (CEC). It includes lookups for specific NEC tables, such as 311.60(C)(67-84).

### What are common use cases for Electrician's Helper?

Common use cases include performing on-site calculations for voltage, current, and power in various circuit types, determining appropriate wire and conduit sizes for installations, and quickly referencing conductor ampacity and box fill requirements according to electrical codes.

## Version history (last 5 releases)

### 2.3.0 — 2026-06-04

Updated for newer iPhones.  Fixed minor bugs.

### 2.2.4 — 2026-05-02

Updated for NEC 2026

### 2.2.3 — 2021-12-01

Fixed iPad icons. Removed a bug.

### 2.2.2 — 2021-11-06

Fixed some bugs that were causing  crashes.  Updated some calculators.

### 2.2.1 — 2021-01-30

Fixed bug in voltage drop calculator.

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## More apps by Sam Virgillo

- [iSlipstick](https://appshunter.io/ios/app/islipstick/id324560822)
- [iSlipstick RF](https://appshunter.io/ios/app/islipstick-rf/id351775311)

All apps by Sam Virgillo: https://appshunter.io/developer/324560825

## Related topics

[electrical helper](https://appshunter.io/ios/topics/electrical-helper) · [electrician helper](https://appshunter.io/ios/topics/electrician-helper) · [dakota's electrical calculator](https://appshunter.io/ios/topics/dakota-s-electrical-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*